setSendDelay

getSendDelay

setHeader

encodedHeader - - the header is encoded as a string using this syntax:
encodedHeader = [headerkey '=' headervalue ':' ]*
E.g. an encodedHeader could read "JMSType=car", or
"JMSType=car:MyHeader=MyValue"
That implies neither the header key nor the value
can contain any of the characters ':' and '='.